Electromagnetic Waves (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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What type of wave are EM waves?
What type of wave are EM waves?
Transverse waves
What do EM waves transfer?
What do EM waves transfer?
Energy from source to absorber
Example of an EM radiation source
Example of an EM radiation source
Sun (emits infrared waves)
How are EM waves transferred?
How are EM waves transferred?
By vibrations of electric and magnetic fields
Do EM waves need a medium to travel?
Do EM waves need a medium to travel?
No, they don't need a medium
What can EM waves travel through?
What can EM waves travel through?
A vacuum (such as space)
What do all EM waves form together?
What do all EM waves form together?
Continuous spectrum of EM radiation
What varies between different EM waves?
What varies between different EM waves?
Frequencies, wavelengths, and properties
What is the speed of all EM waves?
What is the speed of all EM waves?
The same speed - the speed of light
What is visible light?
What is visible light?
The portion of the EM spectrum humans can see
How much of the EM spectrum is visible light?
How much of the EM spectrum is visible light?
A very small portion